Pokémon sets › Japanese Expedition Expansion Pack [1st-Edition] › Professor Oak's Research [1st-Edition]

Japanese Expedition Expansion Pack [1st-Edition] Professor Oak's Research [1st-Edition] Pokémon card

Professor Oak's Research [1st-Edition] #53

Japanese Expedition Expansion Pack [1st-Edition] · 2001 · Uncommon

Ungraded · UK

£8.78

PSA 10 · UK

£41.33

Ungraded · US

$7.55

PSA 10 · US

$56.00

Low confidence 88th most valuable of 128 priced cards in Japanese Expedition Expansion Pack [1st-Edition]

Rough guide — limited market data — pre-2010 condition spread, lower-demand card, thinner Japanese market data.

Priced against the UK market and refreshed weekly — adjusted where UK collectors reliably pay above the US average. We have not yet seen enough recent UK activity for this card to read it directly.

A PSA 10 of this card sells for about 4.7× the ungraded price — £8.78 raw against £41.33 graded.

UK ungraded · 15 readings, May 2026 to Aug 2026 -20.5%

30 days-1.8% 90 days-20.8%

Peaked at £11.91 in June 2026; lowest £8.72 in August 2026. PSA 10 moved -0.4% over a comparable period.

UK price month by month

Month	UK ungraded
May 2026	£11.09
June 2026	£9.27
July 2026	£8.94
August 2026	£8.78

UK guide prices, with the US market alongside — updated 29 August 2026. Each market is priced from real market data in that market. Estimates for collection tracking — not an appraisal or a quote.

Check recent UK sold prices on eBay →

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